$ ccwl compile capture-stdout.scm > capture-stdout.cwl
$ cwltool capture-stdout.cwl --message "Hello World!"
[workflow ] start
[workflow ] starting step print
[step print] start
[job print] /tmp/7zksx3xm$ echo \
    'Hello World!' > /tmp/7zksx3xm/51fe79d15e7790a9ded795304220d7a44aa84b48
[job print] completed success
[step print] completed success
[workflow ] completed success
{
    "printed-message": {
        "location": "file:///home/manimekalai/51fe79d15e7790a9ded795304220d7a44aa84b48",
        "basename": "51fe79d15e7790a9ded795304220d7a44aa84b48",
        "class": "File",
        "checksum": "sha1$a0b65939670bc2c010f4d5d6a0b3e4e4590fb92b",
        "size": 13,
        "path": "/home/manimekalai/51fe79d15e7790a9ded795304220d7a44aa84b48"
    }
}
Final process status is success